Use a custom pool-aware FollowRedirects middleware

lib/pleroma/http/adapter_helper.ex

@@ -24,7 +24,6 @@ defmodule Pleroma.HTTP.AdapterHelper do
           | {Connection.proxy_type(), Connection.host(), pos_integer()}
 
   @callback options(keyword(), URI.t()) :: keyword()
-  @callback after_request(keyword()) :: :ok
   @callback get_conn(URI.t(), keyword()) :: {:ok, term()} | {:error, term()}
 
   @spec format_proxy(String.t() | tuple() | nil) :: proxy() | nil
@@ -67,9 +66,6 @@ defmodule Pleroma.HTTP.AdapterHelper do
     Keyword.merge(opts, timeout: timeout)
   end
 
-  @spec after_request(keyword()) :: :ok
-  def after_request(opts), do: adapter_helper().after_request(opts)
-
   def get_conn(uri, opts), do: adapter_helper().get_conn(uri, opts)
   defp adapter, do: Application.get_env(:tesla, :adapter)
 

lib/pleroma/http/adapter_helper/default.ex

@@ -9,9 +9,6 @@ defmodule Pleroma.HTTP.AdapterHelper.Default do
     AdapterHelper.maybe_add_proxy(opts, AdapterHelper.format_proxy(proxy))
   end
 
-  @spec after_request(keyword()) :: :ok
-  def after_request(_opts), do: :ok
-
   @spec get_conn(URI.t(), keyword()) :: {:ok, keyword()}
   def get_conn(_uri, opts), do: {:ok, opts}
 end

lib/pleroma/http/adapter_helper/gun.ex

@@ -34,15 +34,6 @@ defmodule Pleroma.HTTP.AdapterHelper.Gun do
     |> Keyword.merge(incoming_opts)
   end
 
-  @spec after_request(keyword()) :: :ok
-  def after_request(opts) do
-    if opts[:conn] && opts[:body_as] != :chunks do
-      ConnectionPool.release_conn(opts[:conn])
-    end
-
-    :ok
-  end
-
   defp add_scheme_opts(opts, %{scheme: "http"}), do: opts
 
   defp add_scheme_opts(opts, %{scheme: "https"}) do

lib/pleroma/http/adapter_helper/hackney.ex

@@ -24,8 +24,6 @@ defmodule Pleroma.HTTP.AdapterHelper.Hackney do
 
   defp add_scheme_opts(opts, _), do: opts
 
-  def after_request(_), do: :ok
-
   @spec get_conn(URI.t(), keyword()) :: {:ok, keyword()}
   def get_conn(_uri, opts), do: {:ok, opts}
 end

lib/pleroma/http/http.ex

@@ -69,14 +69,11 @@ defmodule Pleroma.HTTP do
         request = build_request(method, headers, options, url, body, params)
 
         adapter = Application.get_env(:tesla, :adapter)
-        client = Tesla.client([Tesla.Middleware.FollowRedirects], adapter)
+        client = Tesla.client([Pleroma.HTTP.Middleware.FollowRedirects], adapter)
 
-        response = request(client, request)
-
-        AdapterHelper.after_request(adapter_opts)
-
-        response
+        request(client, request)
 
+      # Connection release is handled in a custom FollowRedirects middleware
       err ->
         err
     end